I was wondering if you could help with the interpretation of a potential experimental design. We are testing two versions of a 'group' exam, score (out of 100) being the outcome variable, aggregated ...

I have 2 groups of subjects, namely:
Subjects that are younger than 67
Subjects that are older than 67
Each subject of each group wears a sensor that estimate the metabolic equivalent of tasks (METs)...

I am trying to conduct a statistical test of the difference between two shares expressed in percentage points. While I could use a regular t test if the difference was between two means, with shares I ...

I have a database about claims at auto insurance. I can do the math and get Frequency, Severity, Sinistrality. I need to know if cars with automatic transmission have a higher propensity to accidents ...

I have conducted some analyses using DESeq2 and obtained the output. However, instead of interpreting the effect sizes as log2FoldChanges, we would prefer to obtain a model-based mean difference.
I ...

I was conducting in experiment in which i sold products on a pay-what-you-want basis in 4 different information conditions.
Apart from comparing the average willingness to pay across the 4 different ...

I'd like to understand this better in terms of drawbacks and suitability.
For example, if my data includes investigating differences between 2 patient groups and a control group (3 groups in total), ...

I have a collection of N samples from which I have computed all pairwise Euclidean distances.
The samples can be divided in 3 distinct subgroups.
I want to test if the average distance of groups is ...

I am researching whether software developers use different numbers of communication channels when performing different activities. Therefore, I would like to know whether, depending on the activity, ...

Are random intercepts a theoretical/practical prerequisite to random slopes? Why?
I have a three level (rep measures) mixed model where I wouldn't expect lvl 3 variation in initial status of outcome ...

I have observations with 6 individual-level characteristics from 2000 units in 56 groups (villages). I know that within groups, characteristics are strongly related as individuals influence each other....

Context: Zoology undergrad dissertation. The format of my results will be % time individual birds spent doing certain activities (and possibly number of times an activity such as pecking was performed)...

In this article, https://www.tandfonline.com/doi/abs/10.1080/03610910902859574 Peter Austin describes how to calculate the standardized difference between two groups, pg 1229 and pg 1230.
However am ...

I am trying to calculate effect sizes, but all I can find on the web relates only to the effect size of the difference between two groups. What I am interested in, is the effect size of the difference ...

During stats courses on Uni I learnt (if I remember correctly and hopefully don't put my teachers to shame) that if you want to compare multiple groups with eachother you look at the residuals of an ...

Introduction. Assume that two populations $A$ and $B$ are distributed with normal distributions $N(\mu_A, \sigma_A^2)$ and $N(\mu_B, \sigma_B^2)$.
This is a general problem, but as an example, I will ...

I have a market with three goods: PRODUCT_I,PRODUCT_II, PRODUCT_III.
PRODUCT_I is banned by a policy, and its sales brought down to 0.
I want to estimate to what extent PRODUCT_II and/or PRODUCT_III ...

I have an independent variable grouped into irregularly sized classes (0, 1-5, 6-10, 11-20, >20), a continuous dependent variable, and several control variables.
So far I've been trying to stay close ...

I'm a neuroscientist approaching doing some complex statistics and can't find anyone to point me in the right direction of what I need. I'm happy to read around the subject, I just don't know enough ...

Current problem: We have a batch of $n$ items for which we capture their details with $m$ attributes. It could look something like this:
The goal is to compute an "index" that says how "similar" this ...

I'm performing a diagnostic method comparison study in which I have 2 groups; one assessed using the experimental method, and one assessed using the standard method. These groups are matched, with 3 ...

I am working on a product fabrication process, and I want to demonstrate the consistency of my product. To do this, I am trying to measure the variation in the extent to which a biological material is ...

Below is an example of data output. It represents indicies [y-axis] calculated for 52 weeks in a range of 64 years. Group of 64 years is classified and several years are represented with blue, some ...

I'd like to ask how can analyse data of different patients if they have repeated measures at different timing. How can I group repeated measures to each patient in order to have descriptive data of ...

I have population of 218 people operated on after a certain event. They are operated on from day 30 to day 911 after the event . Some of them were OK (0) and some got a complication (1). I would like ...

I hope I am asking to the right place. I am currently analyzing some Mass Spectometry data of 2 mutant phenotypes and the WT with 5 biological replicates each.
I have normalized the abundance values ...

I'm doing an experiment with 7 groups (batches) of 12 measurements of a certain chemical, where one group (b0) is considered the baseline case. The research question is to find out which groups have ...